"Tartrate" on KGS is ... I am 100% sure!

Kim Myungwan, 8p said: "I heard many times that I am "mymy". I don't know why people believe that I am "mymy". I am NOT. Actually I played against mymy and won at KGS"

It's a big hint.

I checked all games, played by "mymy" on KGS archive: http://www.gokgs.com/gameArchives.jsp?user=mymy&oldAccounts=y

He lost only few of them. The only unknown person who beat "mymy" is "tartrate"!

Here is that game: